Blender Git Loki

Changes based on review by Hans Goudey (HooglyBoogly)

Changes based on review by Hans Goudey (HooglyBoogly)

Merge branch 'master' into soc-2021-porting-modifiers-to-nodes-merge-by-distance

Sculpt: fix anchored/drag dot brush modes

Mask tools: Remove mask delete tool

I have deleted the tool to delete add vertex by clicking on it. In
practise I found it not helpful, and this way it is more in line how
other elements are deleted in blender (vertices, objects etc)

Merge branch 'master' into tracking_tools

Merge branch 'temp-lineart-contained' into lineart-shadow

Merge remote-tracking branch 'origin/master' into temp-lineart-contained

Fix(unreported): LineArt curve objects garbled result.

This is caused by line art loading curve objects twice from curve and converted mesh instances (when instance option is on). Now only load mesh when instance option is on.

Sculpt: fix broken view3d.view_selected in
sculpt mode

Sculpt: more clay fixes

For some reason I have to
take the sqrt of pressure
to match previous behavior,
but for the life of me I can't
find the offending double
multiplication.

Sculpt: More clay brush fixes

Run autopep8 on a few files

Sculpt: UI organization

* Brush channels can now be grouped in
categories.
* TODO: let user edit and create the
categories.

Sculpt: fixed right click menus

They are now configurable in the
brush tab.

Changes based on review by Hans Goudey (HooglyBoogly)

Merge branch 'master' into soc-2021-porting-modifiers-to-nodes-merge-by-distance

# Conflicts:
# release/scripts/startup/nodeitems_builtins.py
# source/blender/blenkernel/BKE_node.h
# source/blender/blenkernel/intern/node.cc
# source/blender/nodes/CMakeLists.txt

Fix Cycles use of uninitialized value in shadow stack intersection on CPU

The patch is against the studio branch. In the master branch it got
fixed with the Cycles X merge.

Differential Revision: https://developer.blender.org/D12705

Fix non-finite curve normal causing Cycles to crash

Similar to the previous change in the area: need to avoid ray
point and direction becoming a non-finite value.

Use the view direction when the geometrical normal can not be
calculated.

Collaboration and sanity inspiration with Brecht!

Viewport Compositor: Fix memory leak after rendering multi-scenes

This was caused by the per view `draw_view` not being freed correctly.

Fixing this also caused issue because the `draw_view` would keep
ownership of the renderbuffer and would free it a second time.

Moving all renderbuffers ownership to `draw_view` for now.